Semester 2-inheritance Of Traits Flashcards
Rudiments happen in what process
Embryology
Hos genes are
Can cause changes in body parts such as mutations
Similar chemistry structures and processes are found in cells of
Molecular biology
Similar dna sequences mean that
They are more closely related
Very different dna sequences show
That they are split longer ago
The enviornment selcts what
Selection pressures and or adaptations
What does fitness mean
You have sucesfully survived and reproduced
The stronger and more beneficial traits will
Pass on to their offsoring
Adaptations can be —– or —
Physical or behavioral
Variation is
Differences or variety if soecies or between soecies in an enviornment
Each loving soecies has what from their ancestors
Descended with modification
An adaptation is
Any inherited characteristic that might increase their chances of survival
Rudiments are
The remains of an ancestral feature
If an adaptation is sucessful organisms will
Hint:def. of fitness
Survive and reproduce
Individuals with beneficial characteristics have
High levels of fotness
Dwm stands for
Descent with modification
Individuals with terrible and weak characteristics will have
Will die or leave very few offspring (Low fitness levels)
Homolgous structures means
Same structures and same functions
And are from close relatives
Analogous structures is
When they have similar structures as well but the have distant relatives and they have similar finction BUT they come from a different origin not same origin like homologous
What does vestigial structures mean and what is an exampel
It means that they are structures that no longer have a function in modern day organisms . (Such as the appendix)
Embryology
Study of developing embryos that show similarities between organisms. The clser they are rekated the more similar they looked like before further development into an adult
Molecular biology
Study of dna and its similarities amongst organisms.
The more related the more amino acids or dna sequences in common
What is divergent evolution
Organisms move to other places and evolved traits that suited them for a particular enviornment
What is convergent evolution
Even if theye evolved from a different common ancestor if they are living in the sane enviornment they will have similar traits
Dna sequences provides a what evidence of evolution
It provides a strong evidence of evolution
Transitional forma
Provide evidence of intermediate forms that link one group of organisms to another
Embryos look much more similar when
Many different vertebrae
When they are in the early stages they look similar
Comparitive anatomy includes
Homologous and analogous structures
Biogeogrpahy is
The study of how and why plants and animals live where they do
Which process is the strongest evidence for common ancestry
dna sequence
Bats and birds are considered
Homologous structures because. Have the smae function in close relatives
Tiktaalik is a what form and why
It is a transitional form because they have the characteristics of both a fish and a tetrapod (four limbs)
